JVM常量池主要包含四个常量池，分别是：Class文件常量池、运行时常量池、全局字符串常量池、以及基本类型包装类对象常量池。 一、class文件常量池为了更加容易的理解本文所说的，我们先写一个程序来分析： 1234567891011121314class FinalTest01{ private int value = 1; public String s = "

一、final 的基本用法1、修饰类final修饰一个类时，表示该类不能继承。比如下面的写法就是错误的： 123456final class A{}class B extends A{} 而且对于类、方法来说，abstract关键字和final关键字不能同时使用，因为矛盾。有抽象方法的abstract类被继承时，其中的方法必须被子类Override，而f

〇、环境变量是什么？在使用 Windows 操作系统时我发现，在安装一个新的工具包后，是无法直接使用这个工具包的。计算机相关专业的学生在配置 VScode 时会感受颇深，他们往往得下载一个 MinGW，之后就得配置环境变量。配好之后，就可以在 cmd 窗口输入gcc -v来看是否配置成功了。 在不同的平台，比如 macOS下，装好工具之后，也得把工具的目录导入到一个.zshrc中，之后键入so

安装输入： 1brew update && install binutils 之后弹出： 123456789binutils is keg-only, which means it was not symlinked into /usr/local,because because Apple provides the same tools and binutils is poo

1. Write in FrontI had this idea very early on, to record myself every year, summarize the gains and shortcomings of this year, and compare whether I have made progress and whether my life has beco

Development tools macOS(Apple M1) VScode otool binutils Let’s start with a simple program1234567891011121314151617#include <unistd.h>int global_init_a = 1;char global_init_b = 'a';i

Here is it!1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798

What is DNSDNS (Domain Name System) is the English abbreviation of “Domain Name System”. It is a computer and network service naming system organized into a domain hierarchy. It is used in TCP/

Start to write a simple Linux kernel ModuleStep 1 Create a folderCreate a suitable folder, this folder will contain the source program and other compiled files. 1➜ mkdir Mooc && cd Mooc Ste

About the problem of struct structure assignment1: Shallow copyThe abstract data structure instance of the struct structure can be directly assigned, see this example: 12345678910111213141516171819